Signal enhancement method of multi-antenna system and intelligent access terminal

Abstract

The invention discloses a signal enhancement method of a multi-antenna system and an intelligent access terminal. The method comprises the following steps: starting and acquiring signal quality data of a plurality of antenna units, and calculating the signal quality of each antenna unit according to the acquired signal quality data; judging whether the signal of the antenna unit is interfered or not for the antenna unit of which the calculated signal quality does not meet the preset condition; dynamically adjusting the signal source of the antenna unit of which the signal is judged to be interfered; if the signal of the antenna unit is not interfered, the signal of the antenna unit is weak, and the communication parameter of the antenna unit is dynamically adjusted; acquiring signal quality data of the dynamically adjusted antenna unit, and calculating signal quality corresponding to the dynamically adjusted antenna unit according to the acquired signal quality data; and according to all the calculated signal quality, selecting the antenna unit with the optimal signal quality to carry out data receiving and transmitting, and closing other antenna units at the same time. According to the invention, efficient and stable communication can be realized in a complex environment, and power consumption is low.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication technologies, and in particular to a signal enhancement method for a multi-antenna system and an intelligent access terminal. Background Art

[0002] In modern dense network environments, such as city centers, business districts, and high-density residential areas, signal interference problems in multi-antenna systems have become a major obstacle affecting communication efficiency and quality. Although multi-antenna technologies such as MIMO (Multiple-Input Multiple-Output) have been widely used to improve signal transmission quality and increase network bandwidth, they still face many challenges in actual deployment. Co-channel interference and adjacent-channel interference are common problems. The former occurs when multiple devices share the same frequency band, while the latter is caused by the overlap of signal frequency bands, both of which lead to signal quality degradation.

[0003] Existing signal processing and antenna layout technologies have not yet been able to fully solve the mutual interference problem caused by multiple antennas working simultaneously in dense network environments. This interference is particularly evident in situations with high communication demands, such as large public events or emergencies, affecting the stable transmission of data and the real-time nature of communications. In addition, due to the reflection and shielding effects of buildings in cities, antenna layout is often limited by the difference between theoretical models and actual physical environments, resulting in idealized antenna configurations that are not ideal in practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a signal enhancement method and intelligent access terminal for a multi-antenna system to solve the technical problem of mutual interference caused by multiple antennas working simultaneously. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a signal enhancement method for a multi-antenna system, which comprises the following steps in each signal monitoring cycle:

[0007] Starting and acquiring signal quality data of multiple antenna units, and calculating the signal quality of each antenna unit according to the acquired signal quality data;

[0008] For the antenna unit corresponding to which the calculated signal quality does not meet the preset condition, determining whether the signal of the antenna unit is interfered;

[0009] For the antenna unit whose signal is determined to be interfered, dynamically adjust its signal source; for the antenna unit whose signal is determined to be not interfered, its signal is weak, and dynamically adjust its communication parameters;

[0010] Acquire signal quality data of the dynamically adjusted antenna unit, and calculate the signal quality corresponding to each dynamically adjusted antenna unit according to the acquired signal quality data;

[0011] According to the calculated signal qualities, the antenna unit with the best signal quality is selected for data transmission and reception, while other antenna units are turned off.

[0012] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data comprises the following steps:

[0013] Monitor and obtain specific information corresponding to the signal received by the antenna unit; calculate the bit error rate of the antenna unit based on the obtained specific signal; wherein the specific information includes a known data pattern, a synchronization sequence or a signal identifier used for synchronization, identification or verification.

[0014] In some embodiments, if the bit error rate of the antenna unit is lower than a set first preset threshold, the signal quality of the antenna unit corresponding to the bit error rate meets the preset condition; otherwise, the signal quality of the antenna unit corresponding to the bit error rate does not meet the preset condition.

[0015] In some implementations, selecting an antenna unit with the best signal quality for data transmission and reception based on all the calculated signal qualities includes the following steps:

[0016] Select one of the antenna units as the current antenna unit, compare the bit error rate of the current antenna unit with the bit error rates of other antenna units, and obtain the antenna unit with the lowest bit error rate; when the antenna unit with the lowest bit error rate is in a standby state, select the antenna unit with the lowest bit error rate to receive and send data, and when other antenna units are in a standby state, turn off all other antenna units.

[0017] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data further includes the following steps:

[0018] When the antenna unit is in a signal receiving state, if there is communication service in an adjacent time slot corresponding to the signal received by the antenna unit, the received signal is parsed and the communication service success rate of the antenna unit is updated; if there is no communication service in the adjacent time slot corresponding to the signal received by the antenna unit or the parsing of the received signal is completed, the signal-to-noise ratio of the antenna unit is monitored and obtained in real time, and when the signal-to-noise ratio is low, the modulation mode of the antenna unit is switched from high-order modulation to low-order.

[0019] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data further includes the following steps:

[0020] When the antenna unit is in a signal transmitting state, the adjacent time slot signal corresponding to its transmitting signal is monitored, and the response speed of the antenna unit is evaluated according to whether the adjacent time slot signal of the antenna unit contains specific response information; wherein the specific response information includes an acknowledgment signal ACK and a denial signal NACK; for the antenna unit judged to have a weak signal, its transmission power is dynamically adjusted or switched to a backup signal source according to the response speed of the antenna unit.

[0021] In some implementations, determining whether a signal of the antenna unit is interfered with comprises the following steps:

[0022] If the signal strength of the antenna unit is lower than the second preset threshold, the signal of the antenna unit is weak; if the signal strength of the antenna unit is not lower than the second preset threshold, the signal of the antenna unit is interfered.

[0023] According to another aspect of the present invention, there is provided an intelligent access terminal, which is applied to the signal enhancement method of a multi-antenna system described above, comprising a terminal body, a plurality of antenna units arranged in the terminal body and at a certain angle, and a CPE device connected to each of the antenna units; the CPE device monitors the signal quality data of each of the antenna units in real time, identifies the antenna unit with the best signal quality for data transmission and reception, and shuts down the other antenna units.

[0024] In some implementations, the number of the antenna units is 3, and the three antenna units are arranged at an angle of 120° to form an equilateral triangle structure.

[0025] In some implementations, the intelligent access terminal is provided with an external network port, and is connected to an external network through the CPE device for data exchange; the usage modes of the CPE device include directly using a built-in antenna mode, an external antenna mode, and as an intermediate frequency supporting millimeter wave end-to-end test system mode.

[0026] Implementing one of the above technical solutions of the present invention has the following advantages or beneficial effects:

[0027] The present invention establishes an intelligent signal processing method model for the signal interference problem in a multi-antenna system. The method sets multiple signal monitoring cycles, monitors the signal quality data of the signals received and sent by different antenna units in each signal monitoring cycle, and evaluates the quality of each antenna unit signal through the signal quality data. According to the signal quality evaluation algorithm, the antenna unit with the best signal quality is selected for signal reception and transmission, and other antenna units with weaker signals are automatically turned off to ensure that communication is mainly carried out through the antenna with the strongest signal.

[0028] The present invention realizes efficient and stable communication in a complex environment in a multi-antenna system in a high-density network environment. At the same time, only one antenna with the strongest signal communicates in each signal monitoring cycle, effectively realizing low power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] Figure 1 is a flow chart of a signal enhancement method for a multi-antenna system according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of a smart access terminal structure and its communication connection according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of downlink output signal strength of an intelligent access terminal according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of uplink output signal strength of an intelligent access terminal according to an embodiment of the present invention;

[0034] Figure 5 The figure is a schematic diagram comparing the influence of the number of signal sources on the quality of uplink output signals of intelligent access terminals according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, wherein various exemplary embodiments that may be used to implement the present invention are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present disclosure. It should be understood that they are only examples of processes, methods, devices, etc. that are consistent with some aspects of the present disclosure as detailed in the attached claims, and other embodiments may also be used, or the embodiments listed herein may be modified in structure and function without departing from the scope and essence of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", etc. indicate the orientation or positional relationship based on the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation. The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "multiple" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] In order to illustrate the technical solution of the present invention, a specific embodiment is used below for description, and only the parts related to the embodiment of the present invention are shown.

[0038] Embodiment 1:

[0039] like Figure 1 As shown, the present invention provides a signal enhancement method for a multi-antenna system, which includes the following steps in each signal monitoring cycle:

[0040] S100, starting and acquiring signal quality data of multiple antenna units, and calculating the signal quality of each antenna unit according to the acquired signal quality data;

[0041] S200, for antenna units corresponding to which the calculated signal quality does not meet the preset condition, determining whether the signal of the antenna unit is interfered;

[0042] S300. Dynamically adjust the signal source of the antenna unit whose signal is determined to be interfered with; dynamically adjust the communication parameters of the antenna unit whose signal is determined to be not interfered with because its signal is weak. Dynamically adjust the signal source of the antenna unit whose signal is interfered with, including changing the transmission power to enhance the signal and reduce interference, adjusting the transmission frequency to avoid the interference frequency band, and switching to the backup signal source when the signal is very weak. Dynamically adjust the communication parameters of the antenna unit with weak signal, including changing the modulation mode to adapt to different signal-to-noise ratio conditions. For example, if the signal-to-noise ratio of the received signal is poor, switch from a high-order modulation mode to a lower-order modulation mode, such as switching from 16-QAM to QPSK, to reduce the bit error rate;

[0043] S400, acquiring signal quality data of the dynamically adjusted antenna units, and calculating the signal quality corresponding to each dynamically adjusted antenna unit according to the acquired signal quality data;

[0044] S500: According to the calculated total signal quality, select the antenna unit with the best signal quality to send and receive data, and turn off other antenna units.

[0045] The present invention establishes an intelligent signal processing method model for the signal interference problem in a multi-antenna system. The method sets multiple signal monitoring cycles, monitors the signal quality data of the signals received and sent by different antenna units in each signal monitoring cycle, and evaluates the quality of each antenna unit signal through the signal quality data. According to the signal quality evaluation algorithm, the antenna unit with the best signal quality is selected for signal reception and transmission, and other antenna units with weaker signals are automatically turned off to ensure that communication is mainly carried out through the antenna with the strongest signal. Furthermore, in a multi-antenna system in a high-density network environment, efficient and stable communication in a complex environment is achieved. At the same time, only one antenna with the strongest signal is used for communication in each signal monitoring cycle, effectively achieving low power consumption.

[0046] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data includes the following steps:

[0047] Monitoring and acquiring specific information corresponding to the signal received by the antenna unit; wherein the specific information includes a known data pattern, a synchronization sequence or a signal identifier used for synchronization, identification or verification;

[0048] According to the acquired specific signal, the bit error rate corresponding to the specific signal of the antenna unit is calculated. The bit error rates corresponding to all antenna units are calculated to determine the error of the signal during the transmission process. Among them:

[0049] Bit error rate = number of error bits of a specific signal / total number of bits of a specific signal.

[0050] It is understandable that the bit error rate proposed in this embodiment is to more accurately reflect the error of the signal during the actual transmission process. The specific information corresponding to the signal received by the antenna unit can be independent of a fixed standard, allowing real-time monitoring of signal quality and rapid response to signal changes, so that the method can flexibly cope with a changing communication environment.

[0051] If the bit error rate of the antenna unit is lower than the set first preset threshold, the signal quality of the antenna unit corresponding to the bit error rate meets the preset condition. This means that the error level of the signal is within an acceptable range and the signal quality is considered to be good; otherwise, the signal quality of the antenna unit corresponding to the bit error rate does not meet the preset condition.

[0052] It is understandable that multiple antenna units exist in multiple stages, such as standby state, signal receiving state, and signal transmitting state. Only by setting corresponding signal quality judgment standards and different working modes based on different states can the multi-antenna system achieve efficient and stable communication in complex environments.

[0053] In some implementations, selecting an antenna unit with the best signal quality for data transmission and reception based on the calculated total signal quality includes the following steps:

[0054] Select an antenna unit as the current antenna unit, compare the bit error rate of the current antenna unit with the bit error rates of other antenna units, and obtain the antenna unit with the lowest bit error rate. When the antenna unit with the lowest bit error rate is in the standby state, select the antenna unit with the lowest bit error rate to receive and send data, and when other antenna units are in the standby state, turn off all other antenna units.

[0055] It is understandable that the antenna unit with the lowest bit error rate is selected to perform the task of receiving and sending data. Selecting the antenna unit with the best signal quality can ensure the reliability and efficiency of communication. At the same time, turning off those antenna units that do not meet the preset conditions and have a high bit error rate not only reduces unnecessary interference, but also helps save energy and optimize the use of system resources. At the same time, using the resources during sleep to evaluate and select the optimal antenna unit can avoid consuming additional system resources during the communication process and optimize the overall resource utilization efficiency.

[0056] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data further includes the following steps:

[0057] When the antenna unit is in a signal receiving state, if there is communication service in the adjacent time slot corresponding to the signal received by the antenna unit, the received signal is analyzed and the communication service success rate of the antenna unit is updated (if the analysis is successful, the communication service is successful, and the communication service success rate can be evaluated by the ratio of the number of successful communications to the total number of receptions within a certain signal monitoring period); if there is no communication service in the adjacent time slot corresponding to the signal received by the antenna unit, the signal-to-noise ratio of the antenna unit is monitored and obtained in real time, and when the signal-to-noise ratio is low, the modulation mode of the antenna unit is switched from high-order modulation to low-order.

[0058] It is understandable that when the antenna unit is in the receiving state, only the signal quality can be monitored and evaluated instead of immediately switching to the antenna unit with the best signal quality. In this way, data about the performance of each antenna unit, such as signal-to-noise ratio and bit error rate, is collected, and then these data are used to dynamically adjust the communication parameters of the current antenna. For example, if the signal-to-noise ratio of the received signal is low, it is possible to switch from a high-order modulation method to a lower-order modulation method to reduce the bit error rate. Although antenna switching is not performed in the receiving state, through real-time monitoring and evaluation, this method can adapt to changes in signal conditions, improve signal quality, reduce data transmission errors and retransmissions, and thus enhance the user's service experience.

[0059] It should be noted that communication services refer to planned data transmission tasks, such as voice calls, data downloads, or video streaming. The above tasks need to be completed within specific time slots to ensure timely and accurate data transmission. When a time slot of the antenna unit is occupied by a business, these critical tasks will be processed first, and the signal will be directly parsed to avoid transmission delays without additional in-depth analysis. In the time slots without business, more detailed signal quality detection can be performed, including measurement of indicators such as signal-to-noise ratio and bit error rate, to comprehensively evaluate and optimize future communication performance.

[0060] It is understandable that the evaluation of signal quality is carried out by monitoring the success rate and stability of business transmission. A high success rate and a low bit error rate usually indicate good signal quality. The best signal quality means high signal strength, high signal-to-noise ratio, low bit error rate, and a stable signal with little interference, which helps to achieve efficient and reliable data transmission. If there is a communication business, it means that there is a real-time data transmission task in progress, and the signal will be directly parsed to ensure the timely transmission of data. If there is no business, a more in-depth detection and analysis will be carried out to evaluate the signal quality and potential interference factors. In this way, by flexibly adjusting the signal processing strategy to adapt to business needs, the reliability of signal transmission is effectively improved, latency is reduced, and the use of resources such as energy and bandwidth is optimized. While ensuring the transmission of key services, the signal quality can be continuously monitored and optimized, thereby improving the performance of the entire communication system and the user experience. In this way, a good balance is achieved between business transmission and signal quality evaluation, improving communication efficiency while reducing resource waste.

[0061] In some implementations, calculating the signal quality of each antenna unit according to the acquired signal quality data further includes the following steps:

[0062] When the antenna unit is in the state of transmitting a signal, the adjacent time slot signal corresponding to its transmitting signal is monitored, and the response speed of the antenna unit is evaluated according to whether the adjacent time slot signal of the antenna unit contains specific response information (for example, the receiving time, the first specific response information obtained is regarded as the fastest response speed; for another example, the response speed is evaluated by the ratio of the specific response information obtained within a certain signal monitoring period to the number of specific response information that should be obtained, and the larger the ratio, the faster the response speed). For antenna units judged to have weak signals, their transmission power is dynamically adjusted or switched to a backup signal source according to the response speed of the antenna unit (if the response speed is lower than a certain time or a set ratio, the antenna unit transmission power is increased or switched to a backup signal source). Among them, the specific response information includes an acknowledgment signal ACK and a negation signal NACK.

[0063] It is understandable that when the antenna unit is in the transmitting state, it does not immediately switch to the antenna unit with the best signal quality. Such a strategy helps to solve the problem of how to dynamically adjust the communication strategy in real-time communication. That is, it allows the signal source of the antenna unit, such as the transmission power, to be dynamically adjusted according to the real-time signal quality data to adapt to the current signal conditions. In this way, the antenna system can respond to changes in signal quality in a timely manner and improve the efficiency and reliability of signal transmission. In addition, this method enhances the adaptability of the multi-antenna system, enabling it to better adapt to the dynamically changing communication environment. It is understandable that the above-mentioned response information is crucial for evaluating signal quality because they can indicate whether the signal successfully reaches the target and is responded to. By analyzing these response information, the signal quality can be evaluated and the transmission strategy can be adjusted accordingly to ensure the efficiency and accuracy of signal transmission. The evaluation method based on the response information in this embodiment improves the accuracy of signal processing and helps the system to respond quickly when facing interference.

[0064] In some implementations, determining whether a signal of an antenna unit is interfered with comprises the following steps:

[0065] If the signal strength of the antenna unit is lower than the second preset threshold, the signal of the antenna unit is weak; if the signal strength of the antenna unit is not lower than the second preset threshold, the signal of the antenna unit is interfered.

[0066] In this embodiment, the signal strength of the antenna unit can be obtained by using, but not limited to, a field strength tester or a spectrum analyzer, and corrected by the antenna factor AF. This method uses advanced testing equipment including a field strength tester and a spectrum analyzer. These devices can provide direct measurement of signal strength, while the spectrum analyzer indirectly evaluates the signal strength by monitoring the spectral distribution of the signal. In order to further improve the accuracy of the measurement, the system also considers the antenna factor AF, which is a key parameter that reflects how the gain and directivity of the antenna affect the signal strength, and is usually used for noise calculations of antenna systems and evaluation of antenna performance. By combining the measured signal strength with the antenna factor, the system can correct any deviations caused by antenna characteristics to ensure that the measurement results of the signal strength are more accurate.

[0067] The signal enhancement method of a multi-antenna system of this embodiment further includes the following steps:

[0068] Real-time monitoring of signal quality indicators such as signal strength, geographic location, uplink and downlink transmission rates of each antenna unit. It should be noted that in a multi-antenna system, by real-time monitoring of these signal quality data indicators, the system can identify links with strong signal quality. Selecting the link with the strongest signal quality for data transmission can ensure reliable and efficient data transmission. At the same time, shutting down links with weaker signal quality can reduce system interference and optimize the use of resources such as energy and bandwidth.

[0069] Embodiment 2:

[0070] like Figure 2 As shown, this embodiment provides an intelligent access terminal, which is applied to the signal enhancement method of the multi-antenna system described in the first embodiment, including a terminal body, a plurality of antenna units arranged in the terminal body and arranged at a certain angle, and a CPE device connected to each antenna unit. Among them, the CPE device monitors the signal quality data of each antenna unit in real time, identifies the antenna unit with the best signal quality for data transmission and reception, and turns off other antenna units. It can be understood that the CPE device (Customer Premises Equipment, customer terminal equipment, is a device that converts high-speed 4G signals into WiFi signals commonly used by mobile terminals such as tablet computers, smart phones, and notebooks, and can support multiple terminals to access the Internet at the same time. The design of the CPE device of this embodiment is to provide a convenient solution, allowing users to enjoy high-speed Internet access services through a WiFi network without directly connecting to a cellular network. The intelligent access terminal of this embodiment is connected to mobile terminals such as tablet computers, smart phones, notebooks, and computers through the terminal body, providing efficient and stable communication for products such as mobile terminals and computers. At the same time, the intelligent access terminal has low power consumption performance.

[0071] In some embodiments, the number of antenna units is 3 (in the attached figure, the three antenna units are marked as A, B, and C, respectively), and the three antenna units are arranged at an angle of 120° to form an equilateral triangle structure, and the antenna units communicate with the base station respectively. It should be noted that this layout is intended to optimize spatial coverage and reduce mutual interference between antennas. Each antenna unit is connected to a built-in CPE device, which is responsible for receiving signal quality data from the antenna unit in real time, processing and analyzing it, and is responsible for real-time monitoring of key signal quality indicators such as signal strength and signal-to-noise ratio.

[0072] In some embodiments, the intelligent access terminal is provided with an external network port, and is connected to an external network through a CPE device for data exchange. The usage modes of the CPE device include directly using a built-in antenna mode, an external antenna mode, and an intermediate frequency support millimeter wave end-to-end test system mode. The external network port is used to perform frequency shift modification or self-developed antenna testing, and retrieve data through AT commands. It can be understood that the above mode enhances the adaptability of the device and allows frequency shift modification or self-developed antenna testing. The above characteristics of the intelligent access terminal significantly improve the efficiency of signal reception and transmission, reduce energy consumption, and optimize its performance in high interference environments. At the same time, redundancy and fault-tolerant mechanisms are also considered in the design of the intelligent access terminal to ensure stable operation even when part of the infrastructure fails, thereby significantly improving the reliability of the network and the security of communications.

[0073] like Figure 3 , Figure 4 As shown, the intelligent access terminal of this embodiment can adapt to changes in the signal environment and maintain efficient communication performance through dynamic monitoring and intelligent selection mechanisms. Specifically, the signal output by the intelligent access terminal (referred to as the intelligent terminal in the figure) has the maximum uplink rate and downlink rate of all signals at the same time. Even in a high-density signal environment, the device can maintain a low error level to ensure the stability and reliability of communication. This process effectively reduces the interference caused by multiple antennas working simultaneously, while optimizing energy use and reducing the overall energy consumption of the system. This verifies the effectiveness of the intelligent selection algorithm in improving signal transmission efficiency and quality.

[0074] like Figure 5 As shown in the figure, as the number of signal sources in the network environment increases, the possibility of signal interference also increases, which may have a negative impact on signal quality. In actual deployment, the intelligent access terminal can adjust the communication strategy according to real-time monitoring to achieve the best communication effect. As can be seen from the figure, as the number of antennas increases, the terminal can still have a good output result, and the difference is not large, and the anti-interference ability is strong. In addition, the design of the intelligent access terminal takes into account the different requirements for signal quality in different application scenarios, allowing users to adjust the error threshold according to specific communication needs. Among them, the error threshold refers to the threshold of the bit error rate (Bit Error Rate, BER), that is, the maximum bit error rate allowed at the receiving end. By comparing the error of the received signal (such as the bit error rate) with the error threshold, the quality of the signal can be evaluated. In order to strike a balance between signal accuracy and system resource usage.

[0075] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0076] The above description is only a preferred embodiment of the present invention. It is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. A signal enhancement method for a multi-antenna system, characterized in that: In each signal monitoring cycle, the following steps are included: Starting and acquiring signal quality data of multiple antenna units, and calculating the signal quality of each antenna unit according to the acquired signal quality data; For the antenna unit corresponding to which the calculated signal quality does not meet the preset condition, determining whether the signal of the antenna unit is interfered; For the antenna unit whose signal is determined to be interfered, dynamically adjust its signal source; For the antenna unit whose signal is determined to be not interfered, the signal is weak, and the communication parameters thereof are dynamically adjusted; Acquire signal quality data of the dynamically adjusted antenna unit, and calculate the signal quality corresponding to each dynamically adjusted antenna unit according to the acquired signal quality data; According to the calculated signal qualities, the antenna unit with the best signal quality is selected for data transmission and reception, while other antenna units are turned off.

2. The signal enhancement method of a multi-antenna system according to claim 1, characterized in that: Calculating the signal quality of each antenna unit according to the acquired signal quality data comprises the following steps: Monitor and obtain specific information corresponding to the signal received by the antenna unit; calculate the bit error rate of the antenna unit based on the obtained specific signal; wherein the specific information includes a known data pattern, a synchronization sequence or a signal identifier used for synchronization, identification or verification.

3. The signal enhancement method of a multi-antenna system according to claim 2, characterized in that: If the bit error rate of the antenna unit is lower than a set first preset threshold, the signal quality of the antenna unit corresponding to the bit error rate meets the preset condition; otherwise, the signal quality of the antenna unit corresponding to the bit error rate does not meet the preset condition.

4. The signal enhancement method for a multi-antenna system according to any one of claim 2, characterized in that: According to all the calculated signal qualities, selecting an antenna unit with the best signal quality for data transmission and reception includes the following steps: Select one of the antenna units as the current antenna unit, compare the bit error rate of the current antenna unit with the bit error rates of other antenna units, and obtain the antenna unit with the lowest bit error rate; when the antenna unit with the lowest bit error rate is in a standby state, select the antenna unit with the lowest bit error rate to receive and send data, and when other antenna units are in a standby state, turn off all other antenna units.

5. A signal enhancement method for a multi-antenna system according to any one of claims 1 to 4, characterized in that: Calculating the signal quality of each antenna unit according to the acquired signal quality data also includes the following steps: When the antenna unit is in a signal receiving state, if there is communication service in an adjacent time slot corresponding to the signal received by the antenna unit, the received signal is parsed and the communication service success rate of the antenna unit is updated; if there is no communication service in the adjacent time slot corresponding to the signal received by the antenna unit, the signal-to-noise ratio of the antenna unit is monitored and obtained in real time, and when the signal-to-noise ratio is low, the modulation mode of the antenna unit is switched from high-order modulation to low-order.

6. A signal enhancement method for a multi-antenna system according to any one of claims 1 to 4, characterized in that: Calculating the signal quality of each antenna unit according to the acquired signal quality data also includes the following steps: When the antenna unit is in a signal transmission state, the adjacent time slot signal corresponding to the transmission signal is monitored, and the response speed of the antenna unit is evaluated according to whether the adjacent time slot signal of the antenna unit contains specific response information; wherein the specific response information includes an acknowledgment signal ACK and a negative acknowledgement signal NACK; For the antenna unit determined to have a weak signal, its transmission power is dynamically adjusted or switched to a backup signal source according to the response speed of the antenna unit.

7. A signal enhancement method for a multi-antenna system according to any one of claims 1 to 4, characterized in that: Determining whether the signal of the antenna unit is interfered with comprises the following steps: If the signal strength of the antenna unit is lower than the second preset threshold, the signal of the antenna unit is weak; if the signal strength of the antenna unit is not lower than the second preset threshold, the signal of the antenna unit is interfered.

8. An intelligent access terminal, characterized in that: A signal enhancement method for a multi-antenna system as described in any one of claims 1 to 7, comprising a terminal body, a plurality of antenna units arranged in the terminal body and arranged at a certain angle, and a CPE device connected to each of the antenna units; The CPE device monitors the signal quality data of each antenna unit in real time, identifies the antenna unit with the best signal quality for data transmission and reception, and shuts down other antenna units.

9. The intelligent access terminal according to claim 8, characterized in that: The number of the antenna units is 3, and the 3 antenna units are arranged at an angle of 120° to form an equilateral triangle structure.

10. The intelligent access terminal according to claim 8, characterized in that: The intelligent access terminal is provided with an external network port, and is connected to an external network through the CPE device for data exchange; the usage modes of the CPE device include directly using a built-in antenna mode, an external antenna mode, and an intermediate frequency supporting millimeter wave end-to-end test system mode.

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